主管：尝试启动 gunicorn 时出现错误（生成错误）

Question

我一直在尝试使用主管 per these instructions 设置 gunicorn。但是当我运行时

sudo supervisorctl reread
sudo supervisorctl update
sudo supervisorctl start Server-CardLearning

我收到错误Server-CardLearning: ERROR (spawn error)。

我的配置文件很简单。

[program:Server-CardLearning]
command = gunicorn app:app -b localhost:8000
directory = /home/alexg/www/<flask project>
user = www-data

我的日志文件中出现以下错误。

...
...
2017-11-30 13:48:52,276 INFO gave up: Server-CardLearning entered FATAL state, too many start retries too quickly
2017-11-30 13:49:10,595 INFO spawnerr: unknown error making dispatchers for 'Server-CardLearning': ENOENT
2017-11-30 13:49:11,597 INFO spawnerr: unknown error making dispatchers for 'Server-CardLearning': ENOENT
2017-11-30 13:49:13,599 INFO spawnerr: unknown error making dispatchers for 'Server-CardLearning': ENOENT
2017-11-30 13:49:16,603 INFO spawnerr: unknown error making dispatchers for 'Server-CardLearning': ENOENT
2017-11-30 13:49:16,603 INFO gave up: Server-CardLearning entered FATAL state, too many start retries too quickly
2017-11-30 13:58:12,101 INFO spawned: 'Server-CardLearning' with pid 13725
2017-11-30 13:58:12,560 INFO exited: Server-CardLearning (exit status 3; not expected)
2017-11-30 13:58:13,563 INFO spawned: 'Server-CardLearning' with pid 13730
2017-11-30 13:58:13,982 INFO exited: Server-CardLearning (exit status 3; not expected)
2017-11-30 13:58:15,986 INFO spawned: 'Server-CardLearning' with pid 13735
2017-11-30 13:58:16,411 INFO exited: Server-CardLearning (exit status 3; not expected)
2017-11-30 13:58:19,416 INFO spawned: 'Server-CardLearning' with pid 13742
2017-11-30 13:58:19,842 INFO exited: Server-CardLearning (exit status 3; not expected)
2017-11-30 13:58:20,843 INFO gave up: Server-CardLearning entered FATAL state, too many start retries too quickly
...
...
2017-11-30 14:10:29,728 INFO spawned: 'Server-CardLearning' with pid 13901
2017-11-30 14:10:29,957 INFO exited: Server-CardLearning (exit status 2; not expected)
2017-11-30 14:10:30,961 INFO spawned: 'Server-CardLearning' with pid 13902
2017-11-30 14:10:31,193 INFO exited: Server-CardLearning (exit status 2; not expected)
2017-11-30 14:10:33,200 INFO spawned: 'Server-CardLearning' with pid 13903
2017-11-30 14:10:33,436 INFO exited: Server-CardLearning (exit status 2; not expected)
2017-11-30 14:10:36,443 INFO spawned: 'Server-CardLearning' with pid 13904
2017-11-30 14:10:36,681 INFO exited: Server-CardLearning (exit status 2; not expected)
2017-11-30 14:10:37,682 INFO gave up: Server-CardLearning entered FATAL state, too many start retries too quickly

我哪里错了？我已经尝试了一些我在堆栈溢出时看到的东西，但没有任何东西证明与这个问题有关。

Answer 1

问题的根源似乎是我遇到了app.py 的问题。我使用了一些已安装在本地计算机上但未安装在服务器上的 Flask 库，由于某种原因，当我通过 flask run --host=0.0.0.0 运行服务器时，我没有遇到大错误。

我通过调整位于/etc/supervisor/conf.d/Server-CardLearning.conf 的主管.conf 文件解决了这个问题

新的.conf 文件内容如下：

[program:Server-CardLearning]
environment=SECRET_KEY="some_secret_key"
command=gunicorn app:app -b localhost:8000
directory=/home/alexg/www/Server-CardLearning
user=alexg
autostart=true
stderr_logfile=/var/log/supervisor/test.err.log
stdout_logfile=/var/log/supervisor/test.out.log

通过添加我能够运行的两个日志文件：

cat /var/log/supervisor/test.err.log

看看我有一个卸载的库！ ~喘气！~

安装完库后，我跑了：

sudo supervisorctl reread
sudo supervisorctl update
sudo supervisorctl start Server-CardLearning

现在，如果这不能解决问题，我还发现在主管控制台中进行挖掘很有帮助：

$ sudo supervisorctl
supervisor> help
supervisor> status

我希望这可以帮助别人！

Answer 2

在我的情况下，我不小心删除了主管日志指向的日志文件夹，因此创建这些文件夹并重新启动主管就可以了。

supervisor.conf 示例

[program:Server-CardLearning]
environment=SECRET_KEY="some_secret_key"
command=gunicorn app:app -b localhost:8000
directory=/home/alexg/www/Server-CardLearning
user=alexg
autostart=true
stderr_logfile=/var/log/supervisor/test.err.log
stdout_logfile=/var/log/supervisor/test.out.log

所以我所做的就是：-

mkdir /var/log/supervisor/

之后：-

sudo supervisorctl status all